Relief-valve for radiators.



PATENTED JAN. 21, 1908.

ll q! d llli W W BRISSENDEN RELIEF VALVE FOR RADIATORS. APPLICATION FILIED MAR.4( 1904.

UNITED STATES PATENT OFFICE.

WALTER WEBB BRISSENDEN, OF CHICAGO, ILLINOIS, ASSIGNOR TO NATIONAL STEAM SPECIALTY COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION.

Specification of Letters Patent.

Patented Jan. 21, 1908.

Application filed March 4. 1904:- Serial No. 196.526.

To all whom it may concern:

Be it known that I, WALTER WEBB Brus- SENDEN, a citizen of the United States of America, and resident of Chicago, Cook county, Illinois, have invented a certain new and useful Improvement in Relief- Valves for Radiators, of which the following is a specification.

My invention relates to valves adapted more particularly for use on steam radiators, but adapted also, of'course, for use in various other connections.

Generally stated, the object of my invention is the provision of a simple and highly 'iicient relief valve for use on radiators in steam systems of that particular character in which the water of condensation is allowed to escape from the radiator through a special pipe or off-take, rather than to es cape from the radiator and flow back through the steam pipe, as is the case in certain other systems.

A special obj ectis the provision of a valve of this character in which both the valveseat and the body of expansible or heat-responsive composition employed. for auto matically closing the valve as soon as the air and water have escaped are characterized by an improved construction and arrangement whereby both are readily removable as a unit from the casing or body structure of the valve.

Another object is the provision of an imroved construction and arrangement whereliy the valve-seat and the body of expansible composition which constitutes the valveplug, may be readily inserted in place and given what may be termed a rough adjust-' ment relatively to each other, and whereby the said body of expansible composition or valve-plug may then, upon expanding under the influence of the steam, .adjust itself bodily and thereby assume an accurate position with relation to the valve-seat.

A further object is the provision ofan im roved construction and arrangement where by both the valve-seat and the body of expansible composition or valve-plug may be raised for the purpose of permitting the chamber in the valve-casing to free or clear itself of any sediment or dirt which may have accumulated therein.

To the foregoing and other useful ends,

my invention consists in matters hereinafter set forth and claimed.

In the accompanying drawingsFigure 1 is a vertical section of a valve embodying the principles of my invention; Fig. 2 is a horizontal section on line 22 in Fig. 1; Fig. 3 is a side elevation of the upper portion of the valve-casing Fig. 4c is a side elevation of the upper end-portion of the unitary structure comprising the valve-plug and valveseat,' Fig. 5 is a side elevation of the lower end-portion of said unitary structure.

As thus illustrated, my invention comprises an upright valvecasing A, provided with an enlargement a providing a valvechamber (1 and provided also with upper and lower and lateral threaded portions a a and a The portion a can be connected in any suitable manner with the lower portion of the steam radiator, while the portion a can be connected with the drain or oldtake pipe through which the water escapes from the radiator.

The bottom wall of the chamber a is provided, preferably, with a seat 0 adapted to receive the beveled or tapered lower endportion of the tubular and upwardly projecting valve-seat B. It will be seen that the upper endortion of the said valve-seat is enlarged slig tly to provide a shoulder b.

The tubular upper portion a of the-valvecasing is preferably provided with a sleeve or lining C, preferably of brass, and ada ted to extend somewhat above the top of t e portion a the sleeve or lining C is supplied or provided with longitudinal cuts at different points in its circumference, as shown more clearly in Fig. 3. A bushingC is arranged inside the casing a and outside the sleeve or lining C. As illustrated, the cylindric composition or valve plug D is preferably rovided with a reinforcing sleeve or jacket and also with a metal cap or head-portion F. Both the sleeve or jacket E and the cap F can be secured to the upper end of the body of expansible composition or valvelug D by means of a transversely inserte pin 6. It will be observed that the sleeve E is preferably of such character that the lower end of the valve-plug D is ex osed,. and thereby adapted to expand an movetoward and away from the upper end of the valve-seat This projecting upper-end portion of B. It will alsobe seen that the lower end opening a), and thence through the drain or portion of the said sleeve or jacket E is provided laterally with openings 2, and with an internally arranged collar or shoulder (2 With this arrangement, it will be seen that the smaller diameter of the tubular valveseat B fits the bore of the said collar or shoulder 6 and that the shoulder (Z is adapt ed to engage and bear upon the said shoulder 0 as will hereinafter more fully ap ear. Furthermore, the upper end-portion o the cylindric structure composing the valvep ug is preferably covered by a cap G screwed onto the upper end of the casing portion (L The tubular sleeve or jacket E can fit the lining O, and by giving the upper portions 0 of this lining a slight inward bend or spring, it is obvious that a sufficient grip or frictional contact will be maintained between the two sleeves to hold the valve-plug in any desired position.

In attaching the valve to the radiator, it is simply necessary to insert the combined valve-plug and valve-seat structure until the lower end of the valve-seat engages the seat (1?. The valve-plug D, which has a sliding connection with the valve-seat through the medium of the lower end-p ortion of the sleeve or jacket E, can then be raised slightly so as to. lift the lower end of the expansible om- .position or valve-plug slight y above the upper end of the valve-seat. In use, the water escapes through the valve-chamber a, through the opening e and thence down through, the bore of the valve-seat B, and through the off-take or drain-pipe connected to the bottom of the valve-casing. As soon as theair and water have thus escaped from the radiator, the steam then causes the valveplug' D to expand and engage the upper-end of the valve-seat, and, if the expansion then continues after the lower end of the valveplug engages the valve-seat, the entire valve plug structure can, it will be seen, then shift upwardly or adjust itself vertically until the expansion ceases. In this way, breakage or 0t er injury to the valve is avoided.

The brass sleeve or j aclget C reinforces the body of expansible composition D, and confines or limits the expansion of the compositionor expansible material to endwise movement. In other words, the valve-plug can expand longitudinally, but not laterally, and thus all of the expansive force of the plug isexerted in the right direction for o ening and closing the valve. The entire cy indric structure, comprising the valve-plug and valve-seat, is readily removable through the top of the casing by simply unscrewing the cap G. Also, as illustrated, the valve-plug and valve-seat can be lifted or raised, so as to leave the steam free to blow whatever sediment or other accumulation may have formed in the chamber a out through the oif-take pipe. Thus it is not only ossible to readily remove and clean the va ve-plug and valve-seat, but it is also possible to readily blow or eject all accumulations from the valve-chamber.

An automatic valve of this character is more especially adapted for use in low pressure systems. Should the valve-plug be displaced by abnormal expansion, it can then be restored to normal by hand.

This application covers an improvement on the invention shown and described in my application Serial Number 196,525, in which I have claimed broadly the use of a metal jacket surrounding the valve plug.

I claim as my invention:

1. In a valve of the character described, the combination of a valve-casing, an ex pansible valve-plug and a tubular valve-seat sclidably onnected and organized into a unitary structure, which is readily removable from the casing.

2. In a valve of the character described, the combination of a valve-casing, an expansible valve-plug and a tubular valve-seat suitably connected and organized into a unitary structure which is readily removable from the valve casing.

3. In a valve of the character described, the combination of a valve-casing havin a chambenaperturecl at its bottom, a tubu ar valve-seat having its lower end removably seated in said aperture, and an expansible valve-plug removably mounted in the casing and having its lower end arranged in position to engage the top of said valve-seat, said valve-plug being frictionally held at its middle portion, and thereby adapted to have unlimited end-wise movement should it continue to expand after engaging said valveseat.

4. In a valve of the character described, the combination of a valve-casing provided with a chamber apertured at its bottom, a tubular valve-seat having its lower end removably seated in said aperture, a metal tube extending upwardly and having its lower end telescopically connected with the up er endportion of said valve-seat, and a bo y of ex pansible material inclosed by said tube and adapted to expand and engage the topof said valve-seat when subjected to heat, the Whole forming a unitary structure readily removable from the casing.

5. In a valve of the character described, the combination of a valve-casing, a valveseat, and a body of ex ansible material mounted in said casing and having a yieldin frictional connection therewith, whereby sai body of expansible material may have unlimited end-wise movement and thereby adjust itself relatively to the casing should the ex pansion continue after it engages the said valve-seat, said valve-seat being adapted to act as a stop to limit the expansion in one direction only.

6. In a valve of the character described, the combination of a valve-casing, a valve seat in said casing, and an expansible valveplug adapted to cooperate with said valve-.

ing one end free to expand longitudinally, and having its other end provided with a metal cap secured to said jacket.

8. In a valve of the character described, the combination of a valve-casing, a tubular valve-seat removably mounted in said casing, a metal tube having its lower endportion telescopically connected with the up per end-portion of said valve seat and provided laterally with openings, and a body of heat-responsive or eX ansible material inclosed by said tube and iaving its lower end portion adapted to move toward and away from the said valve-seat when said material expands or contracts, the valve-seat and tube being provided. with mutually engaging shoulders adapted to prevent the separation of the valve-seat and tube when the same are withdrawn from the casing.

9. In a valve, a solid expansible valve-plug and a tubular valveseat, removable as aunitary structure.

Signed by me at Chicago, Cook county, Illinois, this 2nd day of March, 1904.

WALTER WEBB BRISSENDEN.

Correction in Letters Patent N ment in Relief-Valves for Radiators, printed specification requiring correction, as follows: In line 85, page 2,

should read shdably connected; and that sclidably onnected Patent should be read with may conform to the record of the case in the Patent Ofiice.

Signed and sealed this 4th day of February,

C. C. BILLINGS, Acting Commissioner of Patents.

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